Henan BEBON Iron & Steel Co., Ltdwas founded in 2000,with a good reputation in national steel market, we have established international business since 2000,after so many years operation,our clients spreads over all the world.

This is a list of ASTM International standards. Standard designations usually consist of a letter prefix and a sequentially assigned number. This may optionally be followed by a dash and the last two digits of the year in which the standard was adopted.